675398987 has 2 divisors, whose sum is σ = 675398988. Its totient is φ = 675398986.

The previous prime is 675398963. The next prime is 675399031. The reversal of 675398987 is 789893576.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-675398987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (675398587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337699493 + 337699494.

It is an arithmetic number, because the mean of its divisors is an integer number (337699494).

Almost surely, 2^675398987 is an apocalyptic number.

675398987 is a deficient number, since it is larger than the sum of its proper divisors (1).

675398987 is an equidigital number, since it uses as much as digits as its factorization.

675398987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22861440, while the sum is 62.

The square root of 675398987 is about 25988.4394875876. The cubic root of 675398987 is about 877.3781237270.

The spelling of 675398987 in words is "six hundred seventy-five million, three hundred ninety-eight thousand, nine hundred eighty-seven".